Considering the UHD65 has been out for less than a month, I would expect you have a solid year or so to wait. Maybe not, but it's just way to early in this to know for sure what to expect.

Right now, IMO, the UHD65 is the 4K W1070. It's fairly priced, uses a RGB/RGB color wheel, and has been reported to have a very good image.

If Optoma delivers similarly on a short throw, then that's the direction that I would recommend people to go towards, at least until BenQ steps up their 4K game. They aren't even in it at this point without any competitor to Optoma.

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Projectors are released year round. So, there really is no fixed schedule for when models will be released and brought to market. BenQ, while doing very well in the past five years since releasing the W1070, in previous years had been more in the $2,000+ range for anything decent. The entire market with 1080p took several years before any short throw models were available at all.

I expect a much faster time line with the 4K TI chip, but it will still be a process of seeing what consumers want, and what the demand and quality is like. So, I wouldn't expect a massive push all at once from these manufacturers.

Remember, the 4K chip was announced last year, but the majority of what has come to market has only done so in the last two months.